ὁ θάνατος λοῖσθος ἰατρὸς νόσων → death is the last healer of sicknesses
immūtābĭlĭter: adv., v. 1. immutabilis.
immūtābĭlĭtĕr, d’une façon immuable : Dig. 45, 1, 99, 1.